package cn.xi.file.controller;

import cn.xi.file.util.FastDFSClient;
import cn.xi.file.util.FastDFSFile;
import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;

@RestController
@RequestMapping("/file")
public class FileController {

    @RequestMapping("/upload")
    public Result getFile(MultipartFile file) {
        try {
//判断文件是否存在
            if (file==null){
               throw new  RuntimeException("文件不存在");
            }

            //获取文件的完整名称
            String originalFilename = file.getOriginalFilename();
            if (StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }
            //获取文件的扩展名称
            String substring = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            String substring1 = originalFilename.substring(originalFilename.lastIndexOf("."));
            //获取文件内容
            byte[] bytes = file.getBytes();
            //创建文件上传的的封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename, bytes, substring);
            //基于工具类进行文件上传,并接受返回参数
            String[] upload = FastDFSClient.upload(fastDFSFile);
            //封装返回结果
           String url= FastDFSClient.getTrackerUrl()+upload[0]+"/"+upload[1];
           return new Result(true,StatusCode.OK,"文件上传成功",url);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return new Result(false, StatusCode.ERROR, "文件上传失败");
    }
}
